SQL and Explain sometimes not visible in query monitor - response (2) by Duri83

Hello Gary,
thanks for explaining the relations of the tresholds. However, we often have a bad queries running for long time, consuming high cpu and we do not see thier SQLs and Explain plans. For example today, we had a very bad query running for approx. 2 hrs, consuming 105365,61 CPU.
I have seen that sometimes SQL and Explain info changes from visible to invisible and vice versa during the run of the query. At those case, I can use rewind to see what is/was the query doing.
Any pointers on what could be the cause (before we involve TDCS)?
GLHF,
Yuri